January is one of the warmer months of the year in Forster, with average highs near 27.5°C and lows around 20.3°C (mean 23.9°C). It is a relatively wet time of year, averaging 131 mm of rainfall and 72% relative humidity across the period.
January is one of the warmer months of the year in Forster. Across 45 years of records, the warmest January in Forster was 2019 — when the month averaged 27.4°C — while the coldest was 1989 at 21.7°C. Typical January days reach 27.5°C with nights near 20.3°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Forster, averaging 131 mm of rainfall. The wettest January on record was 2013 with 305 mm, while the driest was 2019 at 21 mm.
Relative humidity in Forster during January averages 72%. The most humid January was 1996 at 83%, and the least humid was 1985 at 63%.
January receives about 6.7 kWh/m²/day of solar energy in Forster. The sunniest January was 1985 at 8.1 kWh/m²/day, and the cloudiest was 1996 at 5.6.
Average wind speed in Forster during January is 2.5 m/s. The windiest Januarys were 1997 and 2003 at 2.8 m/s, while the calmest was 2010 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.5°C | 23.7°C | 23.8°C | 24.4°C | 24.1°C | +0.6°C |
| Avg High | 27.2°C | 27.3°C | 27.4°C | 28.0°C | 27.3°C | +0.1°C |
| Avg Low | 19.8°C | 20.2°C | 20.3°C | 20.8°C | 20.9°C | +1.1°C |
| Avg Rain | 139 mm | 127 mm | 105 mm | 136 mm | 161 mm | +22 mm |
January temperatures in Forster have stayed relatively stable across the record.
January has ranged from a record low of 15.1°C (1997) to a record high of 38.8°C (2013).
Rainfall in January is a relatively wet time of year, averaging 131 mm, with a wettest year of 305 mm.
A good time to visit Forster
January is a good time to visit Forster, with days averaging 27.5°C and nights around 20.3°C (mean 23.9°C, warmer than Forster's yearly average) and higher rainfall. December and November are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 27.3°C | 24.1°C | 20.9°C | 33.5°C | 17.4°C | 247 mm | 76% | 2.7 m/s | 6.2 |
| 2024 | 28.4°C | 24.9°C | 21.5°C | 36.0°C | 19.1°C | 145 mm | 74% | 2.4 m/s | 6.6 |
| 2023 | 26.8°C | 23.4°C | 20.0°C | 31.8°C | 17.4°C | 126 mm | 74% | 2.6 m/s | 6.7 |
| 2022 | 26.3°C | 23.6°C | 20.9°C | 30.1°C | 19.3°C | 158 mm | 79% | 2.6 m/s | 6.6 |
| 2021 | 25.6°C | 22.7°C | 19.9°C | 30.8°C | 15.8°C | 180 mm | 78% | 2.5 m/s | 6.4 |
| 2020 | 29.6°C | 25.9°C | 22.1°C | 36.0°C | 20.4°C | 109 mm | 72% | 2.2 m/s | 6.2 |
| 2019 🔥 | 31.9°C | 27.4°C | 23.0°C | 36.4°C | 21.3°C | 21 mm | 65% | 2.7 m/s | 7.4 |
| 2018 | 27.9°C | 24.1°C | 20.4°C | 34.6°C | 16.5°C | 48 mm | 71% | 2.6 m/s | 7.2 |
| 2017 | 29.9°C | 25.8°C | 21.7°C | 38.3°C | 20.0°C | 84 mm | 69% | 2.5 m/s | 6.4 |
| 2016 | 25.6°C | 22.7°C | 19.8°C | 32.4°C | 17.5°C | 255 mm | 79% | 2.3 m/s | 6.4 |
| 2015 | 27.3°C | 24.0°C | 20.7°C | 32.6°C | 17.0°C | 176 mm | 75% | 2.4 m/s | 6.6 |
| 2014 | 27.8°C | 23.9°C | 20.0°C | 36.8°C | 18.3°C | 26 mm | 67% | 2.6 m/s | 7.2 |
| 2013 🌧️ | 28.5°C | 24.8°C | 21.0°C | 38.8°C | 18.5°C | 305 mm | 72% | 2.6 m/s | 6.3 |
| 2012 | 25.7°C | 22.7°C | 19.7°C | 31.9°C | 15.8°C | 248 mm | 76% | 2.6 m/s | 6.4 |
| 2011 | 27.5°C | 24.1°C | 20.7°C | 33.5°C | 18.2°C | 116 mm | 75% | 2.5 m/s | 6.7 |
| 2010 | 28.2°C | 24.5°C | 20.9°C | 34.8°C | 16.4°C | 85 mm | 74% | 2 m/s | 6.9 |
| 2009 | 28.1°C | 24.1°C | 20.0°C | 34.2°C | 16.3°C | 36 mm | 67% | 2.5 m/s | 6.8 |
| 2008 | 25.7°C | 23.1°C | 20.4°C | 29.9°C | 17.8°C | 173 mm | 80% | 2.5 m/s | 6.3 |
| 2007 | 28.2°C | 24.1°C | 20.1°C | 35.5°C | 17.7°C | 32 mm | 68% | 2.7 m/s | 7.1 |
| 2006 | 27.4°C | 24.4°C | 21.5°C | 36.3°C | 20.0°C | 174 mm | 78% | 2.4 m/s | 6.4 |
| 2005 | 27.2°C | 23.6°C | 20.0°C | 33.4°C | 16.6°C | 176 mm | 72% | 2.4 m/s | 6.8 |
| 2004 | 29.2°C | 25.1°C | 21.0°C | 37.4°C | 18.2°C | 135 mm | 71% | 2.4 m/s | 6.6 |
| 2003 | 27.2°C | 23.6°C | 19.9°C | 35.3°C | 18.1°C | 34 mm | 68% | 2.8 m/s | 7 |
| 2002 | 27.6°C | 23.9°C | 20.1°C | 35.3°C | 16.9°C | 49 mm | 66% | 2.5 m/s | 7.3 |
| 2001 | 28.6°C | 24.7°C | 20.7°C | 35.1°C | 18.5°C | 118 mm | 69% | 2.6 m/s | 6.6 |
| 2000 | 24.8°C | 21.8°C | 18.8°C | 33.7°C | 16.4°C | 123 mm | 74% | 2.6 m/s | 6.5 |
| 1999 | 27.6°C | 24.4°C | 21.2°C | 32.1°C | 18.9°C | 175 mm | 75% | 2.5 m/s | 6.5 |
| 1998 | 29.3°C | 25.5°C | 21.6°C | 34.2°C | 19.8°C | 98 mm | 69% | 2.6 m/s | 6.7 |
| 1997 | 25.0°C | 21.8°C | 18.5°C | 30.7°C | 15.1°C | 147 mm | 72% | 2.8 m/s | 6.2 |
| 1996 | 25.5°C | 22.8°C | 20.1°C | 32.5°C | 18.3°C | 241 mm | 83% | 2.3 m/s | 5.6 |
| 1995 | 24.6°C | 21.9°C | 19.2°C | 28.3°C | 17.0°C | 191 mm | 78% | 2.6 m/s | 6.3 |
| 1994 | 29.2°C | 24.9°C | 20.5°C | 37.9°C | 17.3°C | 59 mm | 64% | 2.4 m/s | 7.2 |
| 1993 | 28.5°C | 24.6°C | 20.7°C | 33.5°C | 17.7°C | 70 mm | 74% | 2.2 m/s | 6.5 |
| 1992 | 25.9°C | 22.4°C | 18.9°C | 30.8°C | 15.9°C | 88 mm | 75% | 2.4 m/s | 6.5 |
| 1991 | 29.4°C | 25.3°C | 21.1°C | 33.8°C | 18.1°C | 99 mm | 68% | 2.4 m/s | 7 |
| 1990 | 27.5°C | 23.7°C | 19.8°C | 34.2°C | 16.1°C | 99 mm | 72% | 2.3 m/s | 6.3 |
| 1989 ❄️ | 24.3°C | 21.7°C | 19.0°C | 30.2°C | 17.8°C | 231 mm | 77% | 2.5 m/s | 6.4 |
| 1988 | 27.4°C | 23.8°C | 20.3°C | 32.6°C | 17.8°C | 156 mm | 74% | 2.6 m/s | 7.3 |
| 1987 | 29.3°C | 25.2°C | 21.0°C | 35.4°C | 16.7°C | 132 mm | 70% | 2.4 m/s | 6.7 |
| 1986 | 26.5°C | 22.7°C | 18.9°C | 32.5°C | 16.1°C | 165 mm | 69% | 2.4 m/s | 6.9 |
| 1985 | 28.5°C | 23.8°C | 19.2°C | 33.8°C | 15.7°C | 63 mm | 63% | 2.3 m/s | 8.1 |
| 1984 | 25.4°C | 22.2°C | 19.0°C | 32.2°C | 16.5°C | 190 mm | 75% | 2.5 m/s | 6 |
| 1983 | 27.7°C | 23.7°C | 19.7°C | 34.3°C | 17.4°C | 74 mm | 67% | 2.3 m/s | — |
| 1982 | 27.2°C | 23.8°C | 20.3°C | 33.6°C | 17.5°C | 200 mm | 76% | 2.5 m/s | — |
| 1981 | 28.8°C | 24.7°C | 20.7°C | 33.6°C | 17.3°C | 41 mm | 69% | 2.4 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 27.5°C with lows near 20.3°C (mean 23.9°C), based on 45 years of NASA POWER data.
January averages 131 mm of rainfall in Forster, a relatively wet time of year. The wettest on record was 305 mm in 2013.
The hottest January reached 38.8°C in 2013. The coldest dipped to 15.1°C in 1997.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 19.8°C to 20.6°C while daytime highs eased from 27.5°C to 26.9°C, narrowing the gap between day and night.
January is one of the warmer months of the year in Forster and a relatively wet time of year, so plan for around 27.5°C daytime highs and 20.3°C at night.
Not quite — January is the 12th coolest month in Forster, averaging 23.9°C.
For January in Forster, pack light layers you can adjust through the day, with typical highs of 27.5°C and lows of 20.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 72% — moderately humid.
Average wind speed in January is 2.5 m/s. The windiest January on record averaged 2.8 m/s (1997).
The wettest January on record was 2013 with 305 mm. On average, January sees 131 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Forster behaves each January, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for January specifically, along with year-by-year records and how the month has changed over the decades.
